TPS2047BDG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TPS2047BDG4 is a 3-output current-limit load switch IC with 2 inputs, undervoltage lockout, and 0.25 A per channel current limiting in a 16-pin SOIC package. It protects downstream circuits from overcurrent faults in USB and power distribution applications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- TPS2047BDG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS2047BDG4?
- 3 independent current-limited output channels at 0.25 A each enabling simultaneous power switching to multiple downstream loads
- Integrated undervoltage lockout (UVLO) preventing load activation below safe input voltage thresholds without external supervision circuitry
- 2-input to 3-output topology with independent enable controls for flexible power distribution and sequencing in USB hubs and embedded systems
- 16-pin SOIC package simplifying board integration with standard SMD assembly and easy visual inspection for quality control
What is TPS2047BDG4 used for?
The TPS2047BDG4 is designed for USB port power distribution, multi-load embedded power management, and bus-powered hub applications where per-port current limiting is required. Its 3-channel architecture with 0.25 A current limits protects each downstream device from overcurrent conditions while the integrated UVLO ensures outputs are only enabled under valid input supply conditions. It is well-suited for USB 2.0 hubs, industrial I/O modules, and embedded systems requiring fault-tolerant multi-output power switching from a single 5 V or 3.3 V bus.
What are the specifications of TPS2047BDG4?
| YTEOL | 0 |
| Additional Feature | UNDERVOLTAGE LOCKOUT |
| Adjustable Threshold | NO |
| Analog IC - Other Type | LOAD SWITCH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Channels | 3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.11mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the TPS2047BDG4 datasheet?
TPS2047BDG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS2047BDG4?
Compatible alternatives and drop-in replacements for TPS2047BDG4:
Frequently Asked Questions
How does the TPS2047BDG4's per-channel current limit protect individual USB port loads from overcurrent faults?
Each of the 3 output channels is individually current-limited to 0.25 A. When an output load exceeds this threshold, the internal MOSFET enters current limiting mode, clamping output current to 0.25 A and preventing supply rail collapse. This ensures a fault on one port, such as a short-circuited USB device, does not affect the remaining 2 ports or upstream circuits operating from the same 5 V supply.
What role does the undervoltage lockout (UVLO) feature play in the TPS2047BDG4's power distribution design?
The integrated UVLO monitors the input supply voltage and disables all 3 output channels if the input falls below the lockout threshold. This prevents partial-power operation, which could cause connected microcontrollers or peripherals to malfunction with corrupted data or state. UVLO improves system reliability during power-on sequencing and voltage droop events without requiring external voltage supervisor ICs or comparator circuits.
For a 3-port USB hub design, how does the TPS2047BDG4's 2-input 3-output architecture simplify the power switch BOM?
A single TPS2047BDG4 replaces 3 discrete load switches or MOSFETs plus individual current-sense resistors and comparators for each of the 3 USB ports. The 16-pin SOIC package consolidates current limiting and enable logic into one device, reducing PCB area, component count, and BOM cost while providing consistent 0.25 A per-port protection matched to USB 2.0 low-power device requirements.
How does the TPS2047BDG4 compare to a simple MOSFET switch for overcurrent-sensitive industrial I/O power distribution?
Unlike a discrete MOSFET with no intrinsic current-limit behavior, the TPS2047BDG4 provides automatic 0.25 A per-channel current clamping and UVLO without external sensing or control circuits. This eliminates the resistor-comparator-gate-drive chain required for equivalent discrete protection, saving at least 5-8 passive components per channel and reducing design time in 3.3 V or 5 V industrial I/O distribution boards where protection density matters.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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